I want to know the audit trail with regards to one user in Salesforce. The user got his permission sets deleted by some process/user and want to find out who did it.
Is this possible? I dont think permission set is set in the fields for audit trail.
Yup, download the setup audit trail CSV and you can search that to find out who made the change: https://help.salesforce.com/articleView?id=admin_monitorsetup.htm&language=en_US&type=0